using System;
using System.Linq;

public class P0032 {
    public static void Main() {
        var l = int.Parse(Console.ReadLine().Trim());
        var m = int.Parse(Console.ReadLine().Trim());
        var n = int.Parse(Console.ReadLine().Trim());
        var total = 100*l + 25*m + n;
        var limit1000 = total / 1000;
        var limit100 = Math.Min(limit1000*10, (25*m + n) / 100);
        var limit25  = Math.Min(limit100*4, n / 25);
        var nUsed = limit25 * 25;
        var mUsed = limit100 * 4 - limit25;
        var lUsed = limit1000 * 10 - limit100;
        Console.WriteLine(l+m+n -lUsed-mUsed-nUsed);
    }
}